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The Influence of Sulfurization and Carbonization on Mo-Based Catalysts for CH 3 SH Synthesis.
- Source :
-
Catalysts (2073-4344) . Mar2024, Vol. 14 Issue 3, p190. 12p. - Publication Year :
- 2024
-
Abstract
- Sulfur-resistant Mo-based catalysts have become promising for the one-step synthesis of methanethiol (CH3SH) from CO/H2/H2S, but the low reactant conversion and poor product selectivity have constrained its development. Herein, we synthesized K-MoS2/Al2O3 and K-Mo2C/Al2O3 catalysts via the sulfurization and carbonization of K-Mo-based catalysts in the oxidized state, respectively. During the synthesis of CH3SH, both K-Mo2C/Al2O3 and K-MoS2/Al2O3 showed excellent catalytic performance, and the activity of the former is superior to that of the latter. The effect of different treatments on the catalytic performance of Mo-based catalysts was investigated by XRD, BET, Raman spectroscopy, H2-TPR, and reactants-TPD characterization. The results showed that the sulfide-treated sample showed stronger metal-support interactions and contributed to the formation of K2S, which exposed more active sites and stabilized the formation of C-S bonds. Carbonized samples enhanced the activation of H2, which promoted the hydrogenation of the intermediate species of carbonyl sulfide (COS) and thus improved the selectivity of CH3SH. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBONIZATION
*CATALYSTS
*RAMAN spectroscopy
*X-ray diffraction
*METHANETHIOL
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 14
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 176303377
- Full Text :
- https://doi.org/10.3390/catal14030190